CVE-2026-64231

drm/msm/dsi: don't dump registers past the mapped region

MEDIUM

5.5

CVSS Score

Published: July 24, 2026 at 03:23 PM UTC

Updated: August 12, 2026 at 07:28 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm/dsi: don't dump registers past the mapped region On DSI 6G platforms the IO address space is internally adjusted by io_offset. Later this adjusted address might be used for memory dumping. However the size that is used for memory dumping isn't adjusted to account for the io_offset, leading to the potential access to the unmapped region. Lower ctrl_size by the io_offset value to prevent access past the mapped area. msm_disp_snapshot_add_block+0x1d4/0x3c8 [msm] (P) msm_dsi_host_snapshot+0x4c/0x78 [msm] msm_dsi_snapshot+0x28/0x50 [msm] msm_disp_snapshot_capture_state+0x74/0x140 [msm] msm_disp_snapshot_state_sync+0x60/0x90 [msm] _msm_disp_snapshot_work+0x30/0x90 [msm] kthread_worker_fn+0xdc/0x460 kthread+0x120/0x140 Patchwork: https://patchwork.freedesktop.org/patch/721747/

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.14 ≤ v < 6.1.1755.14 ≤ v < 6.12.925.14 ≤ v < 6.18.345.14 ≤ v < 6.6.1425.14 ≤ v < 7.0.115.14 ≤ v < 7.16.13 ≤ v < 6.18.346.19 ≤ v < 7.0.116.2 ≤ v < 6.6.1426.7 ≤ v < 6.12.927.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645

Vendor states this is fixed in 567b5e976e2e15280d78c9ef2add1954a0bbb5b1 (fixed)

Vendor states this is fixed in 5b49a46baa853b26dbefa65c6c75dd9ff69f63d4 (fixed)

Vendor states this is fixed in 5e2c196c3430fb94225c4102b1028d0146544761 (fixed)

Vendor states this is fixed in 9f8274749d9010a1a72f97e547b7eb9ebb82345b (fixed)

Vendor states this is fixed in a184aec790135938b0fadb415e55accd1f8685a0 (fixed)

Vendor states this is fixed in ab871d5882953e5574ae2bc47bec88c2e3d22663 (fixed)

Vendor states this is fixed in 5.14 (unaffected)

Vendor states this is fixed in 6.1.175 (unaffected)

Vendor states this is fixed in 6.12.92 (unaffected)

Vendor states this is fixed in 6.18.34 (unaffected)

Vendor states this is fixed in 6.6.142 (unaffected)

Vendor states this is fixed in 7.0.11 (unaffected)